Cayin RU7: 1-Bit Resistor Network Dongle DAC /Amp

[NAD Fi]

Suggested Retail Price: US$289.99
Date of Availability: May 29th, 2023 (subject to logistic arrangement of your local dealer)

Please add lightning connectors in the package as retailers will not be stocking or offering the lightning connectors.

 

[Currawong]

I don't know if the 1bit one is closer to a delta-sigma or to that of an R2R, but since it is a discrete component dac I think it is closer to the second. You should ask anyone who has compared the sound of an N6II-R01 to that of an N7.

Closer to a sigma-delta DAC. Essentially, it’s a pure SD DAC.

Lower noise floor than the RU6? I have an Andromeda Ti that I love to use with my RU6, but I need an iematch to avoid hiss (Damn Campfire.) I'll probably wait for a larger jump. Congrats on the new product!

Looks like it has an 0.5 Ohm OI from both outputs. 2 Ohms would be better to deal with hiss, but people get all upset if it's not near zero, without understanding how that can increase hiss with no benefit.

I have the mojo 2 and i really like it. I was thinking of buying the RU6 to get to hear the much hyped R2R analogish sound. But now i am wondering would the RU6 offer that variety in sound or the RU7.
Can someone explain the characteristics of a 1bit discrete resistor dac in RU7?

The RU6 is R2R. The N7 is not. If the difference is anything like my experience with the Hugo 2 and R7, the RU7 will just sound flatter overall.

 

[ducnsh]

Looks like it has an 0.5 Ohm OI from both outputs. 2 Ohms would be better to deal with hiss, but people get all upset if it's not near zero, without understanding how that can increase hiss with no benefit.

Many people think that lower OI, lower hiss :/

 

[BlankName]

The RU6 is R2R. The R7 is not. If the difference is anything like my experience with the Hugo 2 and R7, the RU7 will just sound flatter overall.

You mean N7 instead of R7?

 

[Ben86]

Can you make any comparisons in terms of Sound beetween Ru6/Ru7 plsss???

 

[zolom]

Can you make any comparisons in terms of Sound beetween Ru6/Ru7 plsss???

That is much needed.

 

[c1pseudonaz]

So next step should be a 1bit card for the N6ii? But maybe n6ii is already too old to propose a new card

 

[JeffJ]

400mW ouput is impressive. Only 20mW less than L&P W4. Is this the second most powerful dongle currently?

 

[musicday]

400mW ouput is impressive. Only 20mW less than L&P W4. Is this the second most powerful dongle currently?

Probably, but is more powerful then W4 in single end.160 mW vs110 mW.

 

[shez.]

400mW ouput is impressive. Only 20mW less than L&P W4. Is this the second most powerful dongle currently?

Nope, iFi Go Bar 475mW and iFI Go Bar Gold is 550mW. There are more powerful dongles available on the market.

 

[ClieOS]

All the talk on output power is nice, but what about power draw on USB? Do note that if power draw is too high, some smartphone might not be able to power the output fully.

 

[JeffJ]

Nope, iFi Go Bar 475mW and iFI Go Bar Gold is 550mW. There are more powerful dongles available on the market.

I once read somewhere that iFi Go Bar 475mW was achieved at THD+N＜5%. At THD+N＜0.1% it was measured at 279mW.

 

[shez.]

I once read somewhere that iFi Go Bar 475mW was achieved at THD+N＜5%. At THD+N＜0.1% it was measured at 279mW.

That means it loses slightly in sound quality with more power pushing in. However, it doesn't mean that it can't push the 475mW from a USB input.

All the talk on output power is nice, but what about power draw on USB? Do note that if power draw is too high, some smartphone might not be able to power the output fully.

The power consumption of RU6 and RU7 are roughly the same, around 100mA to 110mA.

 

[JeffJ]

That means it loses slightly in sound quality with more power pushing in. However, it doesn't mean that it can't push the 475mW from a USB input.

Sure sure. In that case RU7 can prob push more than 400mW at THD+N＜5%. Anyway both are powerful stuff.

 

[ClieOS]

That means it loses slightly in sound quality with more power pushing in. However, it doesn't mean that it can't push the 475mW from a USB input.

That means like RU6, I'll assume some people with iPhone and a power hungry headphone might not get to use the full power on RU7. That's something to keep in mind. Lucky my Xperia 1 IV powers RU6 just fine, even when maxed out.